Hi Dave, thanks for getting back to me.
Even though I'm obviously signed in here using my login information, when I go to the location as indicated to use the "Share" feature it logs me out and prompts me to log back in, which when I try to do it says my username/email address is not recognized by the system which makes it impossible to retrieve a password.
The images that are at issue were done within the Page Builder where there is no option to set the styling to Contain instead of Cover. These are the only options available:
Select the type of the background
Do you want fixed image?
Do you want padding on the top?
Do you want padding on the bottom?
Do you want borders?
Inside Elements Margin